Below is a spreadsheet that shows the changes to Paulson's 13F US long portfolio as of Q3 2012. For a look at how his portfolio has progressed, see our Q2 2012 update:

Paulson's portfolio went up around 11% this quarter from around $11.28B
to around $12.54B. Notable new positions include ~2% stake in MetroPCS (PCS), ~1.8% stake in Conseco Financial Group, and ~1% stakes in Nexen Inc. (NXY) and Shire PLC ADR (SHPG). The largest three stake
increases were Grifols S A (GRFS), Life Technologies (LIFE), and Equinix (EQIX).

Below is a spreadsheet that shows changes to Prem Watsa's 13F US long holdings as of Q3 2012. To have a look at how the portfolio has progressed, see our previous update:

The portfolio size increased slightly from around $1.91B to $1.97B. There is one new position worth over a million dollars, and that is a very small stake in Nexen Inc. (NXY). The main activity in the quarter include:

Roughly doubling the large position in Research in Motion (RIMM) at prices between $6.30 and $8.29. The stock currently trades at $9.20. Watsa's original stake in RIMM has a much higher cost basis as he purchased the bulk of that stake in Q4 2011 and Q1 2012 at prices between $12.52 and $24.42.

The stake in US Bancorp (USB) was reduced by around 30% at prices between $31.90 and $34.93. USB is a long-term holding which was reduced substantially in 2010. The stake reduction indicates a bearish bias.

USG Corp. (USG) stake was reduced to an insignificantly small stake as of Q3 2012 at prices between $15.76 and $23.72.

Wells Fargo & Co. (WFC) stake was reduced by around 40% this quarter at prices between $32.85 and $36.13.

The stake Resolute Forest Products (RFP) was marginally increased.

As a deep value investor that digs for opportunities where the market has mispriced securities, Prem Watsa has said that he expects his holdings to go down in value after his stake initiations. But, he is still able to realize capital gains constantly as other areas of the portfolio outperform as the market values holdings correctly. RIMM and USG are both examples of how the philosophy works in practice: RIMM has gone down drastically since his purchase but he continues to build that position. USG was an underperforming security in the portfolio for a number of years, but this year the stock doubled and Watsa has harvested it.

This article is part of an ongoing series that
provides analysis of the changes made to Ian Cumming & Joseph Steinberg’s Leucadia National's (LUK)
US stock portfolio on a
quarterly
basis. Their US long portfolio currently has just three names and there was only one change from the previous quarter.

The spreadsheet below show Cumming's US stock
holdings as of Q3 2012. Please visit our previous updates to get an idea on how the portfolio has progressed:

The portfolio size dropped by one-third this quarter from $1.23B to $830M. The drop was primarily because of the disposal of Mueller Industries (MLI) which had accounted for ~36% of the portfolio as of last quarter - Mueller Industries (MLI) bought Leucadia's (LUK) stake in Mueller for ~$430M in September. The huge
position in Jefferies Corp (JEF)
account for most of Leucadia's US long portfolio. LUK announced their plans to merge with JEF earlier this month and that has resulted in a pop in the shares of JEF.

Below is a spreadsheet that shows Carl Icahn's US long portfolio holdings as of Q3 2012. To know more on how his holdings have progress, check-out our previous update:

Icahn's portfolio value increased by around 7% this quarter from $10.47B
to $11.19B. There were several marginal increases and just one marginal decrease (Commercial Metals - CMC) to his
holdings this quarter. The two large stakes in natural gas related businesses were left untouched during the quarter: CVR Energy Inc. (CVI) and
Chesapeake Energy Corporation (CHK). Other activity in the quarter
include a ~17% stake increase to the long-term Forest Labs (FRX) position and a ~25% increase to the Navistar (NAV) position. FRX and NAV are trading near the lows for the year and so they are good option to consider for anyone following Ichan's trades. The only other significant activity was a 0.6% stake in Netflix (NFLX). The position has since been built up to a stake more than 10% and Icahn is getting ready for another of his famed proxy battles with the company management.

Below is a spreadsheet that shows the changes to Yale Endowment's US long portfolio holdings as of Q3 2012. To have an idea of how the endowment's holdings have progressed click on our previous update:

After reducing Yale Endowment's US long portfolio to an insignificant amount of just under $30M last quarter compared to the Endowment total value of well over $20B, this quarter saw some very minor adjustments. The US long portfolio is a little bit higher, as new but still rather insignificant positions were established in Carter's Inc. (CRI), China Kanghui Holdings (KH), Insulet Corporation (PODD), Marsh & McLennan (MMC), and Qihoo 360 (QIHU). KH was acquired by Medtronic (MDT) on 9/28/2012 for $31.75 cash - it might have been an arbitrage position to capture the price difference between the market price after the deal announcement and the price it traded at. The only other trade of any significance was the ~70% reduction in the iShares MSCI EAFE ETF (EFA) position.

Below is a spreadsheet that highlights the changes to in Glenn
Greenberg's Brave Warrior Associates US long stock portfolio as of Q3 2012. To see how his portfolio has progressed, check our previous update:

The portfolio increased in value from around $1.41B to $1.61B. The positions were all adjusted incrementally although the number of positions in the portfolio remained steady at 12.

Below is a spreadsheet that shows changes to Wilbur Ross's US long portfolio as of Q3 2012. To see how his portfolio has progressed, click on our previous update:

The portfolio remained largely steady during the quarter. The only changes were minor stake reductions in three very small holdings: Bioscrip Inc. (BIOS), Key Energy Services (KEG), and United Continental (UAL).